Ann Gregg b 1670 Ireland d 1729 Delaware has no primary source documentation of parentage. Her first husband's, William Dixon, parents have been marked Uncertain (and termed "dubious") following an extended (now closed) G2G discussion found here. While the marriage occurred after both had arrived in the colonies, I see the need for some primary documentation for Ann's parentage given that the source for much of the information is the same (Albert Myers Cook) for Ann and Wm Dixon.
I also wonder if the G2G thread referenced above should have been closed given what was learned of the Newark MM records recording marriages that had occurred in Ireland prior to the move (in which case there should be no doubt of William Dixon of Armagh and of Maryland being one and the same). There is certainly ample precedent in Quaker MM records for events in other locations being recorded later in a new location.